<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Title</title>
</head>
<body>
<script>
	var a = 3;
	function test() {
		console.log(a)
    }
    function test2() {
//	    'use strict';
	    let a = 1;
	    return test();//3
    }
	test2();//3

</script>
</body>
</html>